Wanptek WPS305H 30V 5A DC Adjustable Benchtop Power Supply with LED Display, 220V EU Plug

Specifications

• Input Voltage: 220V AC (EU Plug included)
• Output Voltage: 0V – 30V DC (Continuously Adjustable)
• Output Current: 0A – 5A (Continuously Adjustable)
• Display Type: 4-digit LED digital display (Voltage, Current, Power)
• Output Resolution: Voltage: 0.01V, Current: 0.001A
• Cooling Mechanism: Temperature-controlled active fan cooling
• Protection Features: Over-voltage (OVP), Over-current (OCP), Over-temperature (OTP), Short-circuit protection
• Output Terminals: Standard 4mm Banana Jacks (V+, V-, Ground)
• Dimensions : Standard size
• Storage Temperature: -10°C ~ 70°C
• Storage Relative Humidity: <70% RH
• Operating Temperature: 0°C ~ 40°C

Minimum hardware to get started:

• A 220V AC wall outlet : to power the main unit (an EU to Indian plug adapter may be required depending on your wall socket).
• Banana plug to alligator clip cables (usually included) : to securely connect the power supply's output terminals to your bare wires, components, or breadboard without soldering.
• A circuit or component under test : to actually draw power and evaluate your build.

Safety Warnings:

• Set Voltage Before Connecting: Always dial in your target voltage (e.g., 3.3V or 5V for microcontrollers) before connecting your circuit. Connecting a 3.3V ESP32 board while the supply is accidentally left at 12V will instantly destroy it.
• Current Limiting (OCP): Use the constant current (CC) mode to set a safe maximum current draw. If your circuit has a short, the voltage will automatically drop, saving your components from burning up.
• Ventilation: Do not block the rear cooling fan. The unit needs airflow to safely dissipate heat when drawing close to the maximum 5A load.

Accessories
Included in the Box:

• 1 x Wanptek WPS305H 30V/5A Variable Adjustable Switching Power Source DC Power Supply.
• 1× 220V AC Input Power Cable (EU Plug)
• 1× Set of Output Leads (Banana Plug to Crocodile Clips)

Frequently Asked Questions

• Is the Wanptek WPS305H compatible with Arduino and ESP32 testing? Yes, you can precisely dial the voltage down to 5V or 3.3V to safely power and test any microcontroller board.
• Can I use this power supply to charge lithium batteries? Yes, by carefully setting the maximum charge voltage and utilizing the constant current (CC) mode to limit the charging rate.
• Will this work to power high-torque NEMA stepper motors? Yes, it is perfectly suited for testing motors as long as their combined peak draw does not exceed 30V or 5A
• Does it work with standard 220V Indian wall outlets? Yes, it operates on 220V AC, though the included EU plug will require a standard EU-to-Indian adapter for some wall sockets.
• What is the maximum power output of the WPS305H? The maximum theoretical power output is 150 Watts (30 Volts multiplied by 5 Amps).
• Can I power sensitive 3.3V logic circuits with this? Absolutely, the high-resolution adjustment knobs allow you to set the voltage to exactly 3.3V with 0.01V precision.
• How much current can it deliver continuously? It can deliver up to its rated 5A continuously, supported by its internal temperature-controlled active cooling fan.
• How do I connect my bare wires to the power supply? You can use the included banana plug cables with alligator clips, or unscrew the terminal binding posts to clamp down bare wires directly.
• What is the green ground terminal for? The green terminal connects to the mains earth ground, which is useful for preventing electrostatic discharge (ESD) when working with highly sensitive ICs.
• Do I need to connect the ground terminal for basic DC circuits? No, for standard hobbyist and prototyping projects, you only need to connect the positive (red) and negative (black) terminals.
• Does the WPS305H require any software installation to operate? No, this is a completely standalone hardware instrument that does not require any software or drivers.
• Can I control the voltage digitally via USB or Python? No, the WPS305H is purely a manual benchtop supply controlled via the physical adjustment knobs on the front panel.
• Are there any firmware updates required for the LED display? No firmware updates are needed; the display logic is hardwired and ready to use out of the box.
• Is this power supply suitable for beginners?
  Yes. The simple controls and clear digital display make it suitable for beginners, students, hobbyists, and professionals.
• Does it have a digital display?
  Yes. The built-in LED display shows the real-time output voltage, current, and power, making adjustments easy.